Bidirectional frequency-domain digital filtering to simultaneously improve temperature resolution and eliminate spatial inaccuracy of a distributed temperature sensor

2004 ◽  
Vol 43 (11) ◽  
pp. 2724 ◽  
Author(s):  
Arup lal Chakraborty
Keyword(s):  
Frequency Domain ◽  
Temperature Sensor ◽  
Digital Filtering ◽  
Temperature Resolution ◽  
Distributed Temperature Sensor

scholarly journals Design of fiber bragg grating (FBG) temperature sensor based on optical frequency domain reflectometer (OFDR)

2020 ◽  
Vol 10 (3) ◽  
pp. 3158
Author(s):  
Nani Fadzlina Naim ◽  
Siti Noor Maslizan Sudin ◽  
Suzi Seroja Sarnin ◽  
Norsuzila Ya'acob ◽  
Latifah Sarah Supian
Keyword(s):  
Frequency Domain ◽  
Fiber Bragg Grating ◽  
Temperature Sensor ◽  
Continuous Wave ◽  
Beat Frequency ◽  
Bragg Grating ◽  
Optical Frequency ◽  
Temperature Resolution ◽  
Bragg Wavelength ◽  
Optical Source

In this paper, the simulation of Fiber Bragg Grating (FBG) as a temperature sensor is conducted. The FBG temperature sensor is designed based on Optical Frequency Domain Reflectometer (OFDR) concept. A continuous wave (CW) laser is used as the optical source and it is transmitted to two FBGs. The two FBGs reflection spectra will produce a beat frequency that can be detected using a Radio Frequency (RF) Spectrum Analyzer. Any temperature change will shift Bragg wavelength, thus produce a shift for the beat frequency. In this work, an FBG with temperature sensitivity 10 pm/˚C is employed. It is found that by using this technique, a high-resolution temperature sensor can be designed with temperature resolution of 0.1˚C.

Improving Temperature Resolution of Distributed Temperature Sensor Using Artificial Neural Network

2017 ◽  
Author(s):  
Luis Cicero Bezerra da Silva ◽  
Helder Roberto de Oliveira Rocha ◽  
Carlos Eduardo Schmidt Castellani ◽  
Marcelo Eduardo Vieira Segatto ◽  
Maria Jose Pontes
Keyword(s):  
Neural Network ◽  
Artificial Neural Network ◽  
Temperature Sensor ◽  
Temperature Resolution ◽  
Distributed Temperature Sensor ◽  
Artificial Neural
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